The chemistry and scope of praeseodymium and praeseodymium compounds is reviewed here. We manufacture all these compounds and in most instances with these rare earth products , it is important to know the method of manufacture, solubilities, assays and trace impurities.
In 1885, the Austrian chemist baron Carl Auer von Welsbach separated
didymium into two elements, praseodymium and neodymium, which
gave salts of different colors.
The composition of monozite
ore is the basis for rare earth impurities found in
praeseodymium compounds and the level of impurities is directly
related to the separation and source of these ores.
Using classical
separation methods, praseodymium was always difficult to purify.
Much less abundant than the lanthanum and neodymium from which
it was being separated (cerium having long since been removed by
redox chemistry), praseodymium ended up being dispersed among a
large number of fractions, and the resulting yields of purified
material were low. Praseodymium has historically been a rare
earth whose supply has exceeded demand. This has occasionally
led to its being offered more cheaply than the far more abundant
neodymium. Unwanted as such, much praseodymium has been marketed
as a mixture with lanthanum and cerium, or "LCP" for the first
letters of each of the constituents, for use in replacing the
traditional lanthanide mixtures that were inexpensively made
from monazite or bastnäsite. LCP is what remains of such
mixtures, after the desirable neodymium, and all the heavier,
rarer and more valuable lanthanides have been removed, by
solvent extraction.
Level of
impurities:
99.9%(REO)
1000ppm total rare
earth oxide impurities
99.99%(REO) 100ppm
total rare earth oxide impurities
99.999%(REO)
10ppm total rare
earth oxide impurities
99.9999%(REO)
1ppm total rare
earth oxide impurities
For a certificate
of analysis for any of these products ordered contact:
techservice@rareearthproducts.com
Praeseodymium chloride, bromide and nitrates are isolated as the hexahydrates and are very soluble in water. Anhydrous halides are also available. Praeseodymium acetate is somewhat soluble in water. (It is important to work with the manufacturer of your rare earth products because in the case of acetates the solubility varies widely depending on the method of manufacture and reaction conditions.
A new exciting praeseodymium compound is praeseodymium trifluoroacetate which is very soluble in water and has new uses as a catalyst in organic synthesis. Praeseodymium oxalate, carbonate and sulfate are insoluble in water and exist as a defined hydrate. These compounds can also be dehydrated.
Another example of purchasing rare earth compounds from a known manufacturer is praeseodymium fluoride. The rare earth fluorides are used in advanced material films, lens and glasses. In virtually all applications the fluoride should be carbonate free. Rare Earth Products, Inc. uses a proprietary process to make carbonate free rare earth fluorides.
Rare earth Products, Inc makes the most extensive list of rare earth metal beta diketonates. These organometallic compounds are used for MOCVD, spin coating, catalysts and NMR shift reagents to name a few advanced applications. The compounds offered include rare earth metal complexes with
acetylacetonate or 2,4-pentanedionate ACAC
hepatfluorodimethyloctanedionate FOD
hexafluoracetylacetonate HFAC
tetrametylheptanedionate TMHD
trifluroacetylacetonate TFAC
chiral ligands OPT etc.
Most of these compounds are used because of the physical vapor pressure, volatility and organic solvent solubility. Contact our technical service department to get physical data such as melting points, sublimation temperatures, solubility, boiling points, etc - techservice@rareearthproducts.com.
Rare Earth Products, Inc also manufactures the organic soluble compounds praeseodymium 2-ethylhexanoate and praeseodymium cyclohexanebutyrate. These metal organic compounds are soluble in organic solvents. We can also custom synthesize various rare earth p compounds by adding various ligands, dehydrating and coordinating various organic solvents to enhance non polar solubility. Contact techservice@rareearthproducts.com.
The intermetallics praeseodymium sulfide, praeseodymium selenide and praeseodymium telluride are available upon request. Praeseodymium trifluorometanesulfonate or praeseodymium triflate is available and useful as a Friedel -Crafts catalyst as the anhydrous salt or the hydrate. A new compound praeseodymium thenoyltrifluoroacetonate is used as a thermal laser dye
Rare Earth Compounds Praseodymium
| P, 5911 | Praseodymium acetate hydrate, 99.9% (REO) | [ 6192-12-7 ] | 25gm | $26.00 | |
| 100gm | $85.00 | ||||
| P, 5925 | Praseodymium acetate hydrate, 99.99% (REO) | [ 6192-12-7 ] | 10gm | $26.00 | |
| 50gm | $77.00 | ||||
| P, 5903K | Praseodymium acetylacetonate, 99.9% (REO) | [ 14553-09-4 ] | 25gm | $95.00 | |
| 100gm | $357.00 | ||||
| P, 5914 | Praseodymium bromide hydrate, 99.99% (REO) | 10gm | $26.00 | ||
| 50gm | $46.00 | ||||
| P, 5916 | Praseodymium carbonate, 99.9% (REO) | [ 14948-62-0 ] | 25gm | $27.00 | |
| 100gm | $99.00 | ||||
| P, 5926 | Praseodymium carbonate, 99.99% (REO) | [ 14948-62-0 ] | 10gm | $26.00 | |
| 50gm | $61.00 | ||||
| P, 5912 | Praseodymium chloride heptahydrate, 99.9% (REO) | [ 10025-90-8 ] | 25gm | $26.00 | |
| 100gm | $50.00 | ||||
| P, 5927 | Praseodymium chloride heptahydrate, 99.99% (REO) | [ 10025-90-8 ] | 10gm | $26.00 | |
| 50gm | $46.00 | ||||
| P, 5923 | Praseodymium chloride, anhydrous, 99.9% (REO) | [ 10361-79-2 ] | 25gm | $41.00 | |
| 100gm | $152.00 | ||||
| P, 5907 | Praseodymium cyclohexanebutyrate, 99.9% (REO) | 2gm | $51.00 | ||
| 10gm | $237.00 | ||||
| P, 5906 | Praseodymium 2-ethylhexanoate, 99.9% (REO) | 5gm | $36.00 | ||
| 25gm | $166.00 | ||||
| P, 5913 | Praseodymium fluoride, 99.99% (REO) | [ 13709-46-1 ] | 25gm | $50.00 | |
| 100gm | $189.00 | ||||
| P, 5904K | Praseodymium hexafluoroacetylacetonate, 99.9% (REO) | [ 47814-20-0 ] | 2gm | $41.00 | |
| 10gm | $191.00 | ||||
| P, 5915 | Praseodymium nitrate hexahydrate, 99.9% (REO) | [ 14483-17-1 ] | 25gm | $26.00 | |
| 100gm | $46.00 | ||||
| P, 5929 | Praseodymium nitrate hexahydrate, 99.99% (REO) | [ 14483-17-1 ] | 10gm | $26.00 | |
| 50gm | $46.00 | ||||
| P, 5910 | Praseodymium (III,IV) oxide, 99.99% (REO) | [ 12037-29-5 ] | 25gm | $30.00 | |
| 100gm | $113.00 | ||||
| P, 5910Q | Praseodymium (III,IV) oxide, 99.999% (REO) | [ 12037-29-5 ] | 25gm | $54.00 | |
| 100gm | $204.00 | ||||
| P, 5922 | Praseodymium phosphate, 99.9% (REO) | [ 14298-31-8 ] | 25gm | $45.00 | |
| 100gm | $169.00 | ||||
| P, 5919 | Praseodymium sulfate octahydrate, 99.9% (REO) | [ 10277-44-8 ] | 25gm | $26.00 | |
| 100gm | $58.00 | ||||
| P, 5931 | Praseodymium sulfate octahydrate, 99.99% (REO) | [ 10277-44-8 ] | 10gm | $26.00 | |
| 50gm | $46.00 | ||||
| P, 5918 | Praseodymium sulfide, 99.9% (REO) | [ 12038-13-0 ] | 2gm | $29.00 | |
| 10gm | $135.00 | ||||
| P, 5935 | Praseodymium trifluoroacetate, 99.9% (REO) | 2gm | $37.00 | ||
| 10gm | $174.00 | ||||
| P, 5908 | Praseodymium trifluoromethanesulfonate, 99.9% (REO) | [ 52093-27-3 ] | 5gm | $30.00 | |
| 25gm | $141.00 | ||||
| T, 5902K | Tris(6,6,7,7,8,8,8-heptafluoro-2,2-dimethyl-3,5-octandionato)praseodymium, 99.9% (REO) | [ 17978-77-7 ] | 1gm | $26.00 | |
| 5gm | $112.00 | ||||
| T, 5968K | Tris[3-(heptafluoropropylhydroxymethylene-(-)-camphorato)praseodymium, 99.9% (REO) | 1gm | $86.00 | ||
| 5gm | $405.00 | ||||
| T, 5966K | Tris[3-(heptafluoropropylhydroxymethylene-(+)-camphorato)praseodymium, 99.9% (REO) | 1gm | $41.00 | ||
| 5gm | $193.00 | ||||
| T, 5901K | Tris(2,2,6,6-tetramethyl-3,5-heptanedionato)praseodymium, 99.9% (REO) | [ 15492-48-5 ] | 2gm | $49.00 | |
| 10gm | $232.00 | ||||
| T, 5932K | Tris(trifluoromethylhydroxy-d-camphorato)praseodymium, 99.9% (REO) | [ 38053-99-5 ] | 1gm | $43.00 | |
| 5gm | $200.00 |